Hydraulic drill



(No Model.) I 0. H. OXLBY.

HYDRAULIG DRILL.

No. 470,593. Patented Mar. 8, 1892.

.rlitariuys.

TATES CHARLES H. OXLEY, or NORFOLK, NEBRASKA.

HYDRAULIC DRILL.

SPECIFICATION forming part of Letters Patent No. 70,593, dated March 8, 1892. Application filed November 19, 1890. Serial No. 371.956. (N0 model.)

To all whom it may concern:

Be it known that I, CHARLns H. OXLEY, a citizen of the United States, residing at Norfolk, in the county of Madison and State of Nebraska, have invented certain-new and useful Improvements in Hydraulic Drills; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention consists in a new and improved well-point for well-tubes in which are combined a hollow auger-point and devices whereby a stream of liquid or water is driven from the surface through the hollow augerpoint, thereby removing the dirt from the auger, while when the auger reaches the desired water the flow of water down through the hollow boring-point is stopped by the closing of a valve, and the water entering the well is free to rise through a screen and upwardly-opening valves and pass up through the well-tube.

My invention will be hereinafter fully described and claimed.

Referring to the accompanying drawings, Figure 1 is a side view of my new andimproved well-point. Fig. 2 is a longitudinal central sectional view'of the same. Figs. 3 and 4 are detail views of the hollow augerpoint and the valves, and Fig. 5 isaplan view of the valve-plate and valve.

The same letters of reference indicate corresponding parts in all the'figures.

Referring to the several parts by letter, A indicates the hollow auger-point, which is constructed preferably of the form shown in the drawings, so that the water can pass through it, its upper tubular end being formed with an exterior screw-thread, while thelower end of this hollow cutting-point is enlarged and divided by equally distant slits, the sections thus formed being twisted so that their straight free lower ends meet in radial lines extending at right angles to each other, as clearlyshown in the drawings. To the upper end of this auger is connected by a coupling C the screen-tube B of the usual construction, and the'upper end of this screen is connected bya coupling-D with the lower end of the well-tube when the well-point is to be used.

E indicates my watertube, on the lower mg valve I.

end of which is secured acircular valve-plate I, the central opening of which is closed underupward pressure by a downwardly-open- The valve-plate I is of such size that it willfit against the lower end of the apertured screen-tube B, and upon the upper end of this tube fits a valve-plate H, having a central aperture through which the upper end of the water-tube E passes and having four ports or openings H, formed in it as shown. Upon the upper side of the valveplate'I-I rests a leather valve G, and the watertube and valves are all held firmly in position by a binding-nut F, which is screwed.

tightly down upon the upper threaded end of the water-tube E, as shown in Fig. 2. The valve-plates H and I are preferably formed of brass, so as to be non-corrosive.

In operation the motor liquid or Water is forced from the surface by a force-pump through the well-tube, when its downward pressure closes the valve G and forces it to descendthrough the central water-tube E, when it will open the valve 1' at the lower end thereof and be forced out through the hollow auger-point A, thus'removing all dirt from the auger and passing up to the surface around the outside of the well-tube. When the desired water is reached by"the boring-auger the force-pump is stopped and the pressure of the Water from below will close the valve 1, thereby preventing sand, 850., from passing up through the central tube E, the water entering the well passing up through the screen-tube 13, opening the valve G at the upper end thereof and rising up through the well-tube, as will be clearly understood.

Having thus described my invention, what I claim, and desire to secure by Letters Patent. is'

The hollow cutting-point having its lower end enlarged and divided by four equally distant slits, the sections thus formed being twisted so that their straight free lower ends meet in radial lines extending at right angles to each other, substantially as set forth.

In testimony whereof Iaffix my signature in presence of two witnesses.

CHARLES H. OXLEY. 

